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CRC Air Sensor Clean Pro

CRC Air Sensor Clean Pro

Precision cleaner for engine air flow sensors that restores fuel mixture accuracy and engine performance.

Out of stock

⚙ Ideal For

  • Mass air flow sensors
  • Vehicle fuel injection diagnostics
  • Cold and warm engine start issues
  • Rough idle problems
  • Fuel economy restoration

✔ Benefits

  • Restores sensor accuracy
  • Improves engine performance
  • Fast drying, zero residue
  • No ozone-depleting chemicals
  • Evaporates completely clean

CRC Air Sensor Clean Pro cleans the delicate hot wire and hot plate sensors that measure how much air enters the engine. A dirty sensor sends wrong information to the engine computer, causing poor fuel mixture, rough starts, and rough idling.

Key Features

  • Removes Contamination Without Damage — Fast-drying solvent dissolves deposits on sensors without touching or damaging the delicate hot wire or hot plate filaments.
  • Restores Engine Performance — Cleaning the sensor allows the engine computer to accurately measure air intake, restoring proper fuel mixture and engine performance.
  • Zero Residue, Completely Evaporates — Unlike liquid cleaners that can leave residue, this formula evaporates completely, leaving no film or build-up on the sensor.
  • Ozone-Safe Formula — Environmental-friendly formulation with zero ozone-depleting potential (ODP=0.00) and no chlorinated, glycol, or ether compounds.
DETAILED DESCRIPTION →
£22.49 GBP
£22.49 GBP
Sale Sold out
Taxes included. Shipping Policy

🚚 UK Shipping: Standard (£2.99) or FREE on orders over £75.

📦 Dispatched same-day if ordered before 3pm!

Shipping Information

What Are My Shipping Options?

In-Store Pickup

In-Store pickup is available on all purchase. Pickups are available Monday - Friday between the hours of 9:00–17:00. 

An email confirmation will be sent when your order is ready for collection. 

Free Shipping

We offer free Standard (2-3 Days) shipping on orders within the United Kingdom on orders over £100. Please note, some large items that require specialist courier companies, such as large mirrors and palleted items are excluded from this deal.

Shipping Fees

We also offer shipping at the following rates:

Standard-Size Parcel

Standard (UK Only) - 2-3 Days - £2.99

Express (UK Only) - 1-2 Days - £4.99

International (EU) - 3-7 Days - £14.99

International (ROW) - 5-10+ Days -£23.99


Large Parcel

Standard (UK Only) - 2-3 Days - £2.99

Express (UK Only) - 1-2 Days - £4.99

International (EU) - 3-7 Days - £14.99

International (ROW) - 5-10+ Days - £69.99

Most UK orders will be sent using Royal Mail, with larger items being sent with DPD.

International orders within the EU will normally be dispatched with Royal Mail, DPD, or UPS.

International orders to the rest of the world will normally be sent with DPD or UPS.

Please note, international delivery charges are very volatile and subject to change. We will do everything in our power to honour the delivery fee, however, in some cases, shipping may increase in price. In this event, you will be given the offer to pay the difference or cancel the order and receive a full refund.

Please note, we may be subject to various rules and restrictions in relation to some international deliveries, and you may be subject to additional taxes and duties over which we have no control. If such cases apply, you are responsible for complying with the laws applicable to the country where you live and will be responsible for any such additional costs or taxes.

Dispatch Times

Orders placed before 15:00 Monday - Friday will be shipped on the same day. 

Orders placed after this time will be shipped on the following business day,

Please note, we are closed at weekends, as well as English Bank Holidays.

Returns Policy

Our refund policy can be found at the following address: https://esupplyline.com/policies/refund-policy.

Further Information

You can contact us for further information on our shipping policies using the following:

Phone: 01953 711 881

Email: sales@esupplyline.com

Live Chat: Available on our website, Monday - Friday, 8:30 - 17:00.

Contact Form: https://esupplyline.com/pages/contact

View full details

Description

Why Dirty Sensors Cause Engine Problems

Modern cars use a mass air flow (MAF) sensor to measure the amount of air entering the engine, allowing the engine computer to calculate the exact amount of fuel needed for combustion. This sensor is incredibly sensitive — it uses a hot wire or hot plate filament that detects tiny changes in air temperature and flow. When dirt, dust, and oil deposits accumulate on the sensor, it can no longer measure air accurately. The engine computer receives wrong information, compensates with the wrong fuel mixture, and problems develop: rough idling, hesitation during acceleration, cold-start difficulties, and poor fuel economy. Many drivers assume their car needs major repair work when simply cleaning the sensor solves the problem.

Delicate Cleaning Without Damaging Sensors

The hot wire or hot plate on a MAF sensor is extremely fragile — it's thinner than a human hair and operates at high temperature. Standard cleaning methods like brushes or compressed air can easily break these filaments, requiring expensive sensor replacement. CRC Air Sensor Clean Pro's fast-drying liquid formula dissolves contaminants without any physical contact with the sensor, eliminating breakage risk entirely. The solvent evaporates completely in minutes, leaving the sensor perfectly clean and ready for immediate use.

Quick Diagnosis and Prevention

Cleaning the MAF sensor is one of the first troubleshooting steps when a car exhibits poor fuel economy, rough starts, or hesitation. Often, this simple cleaning resolves the problem completely. Regular cleaning — especially after changing the air filter — prevents the sensor from becoming so contaminated that performance suffers. Many mechanics recommend a quick sensor clean during routine maintenance to keep fuel trim and engine performance optimized.

Environmental and Health Considerations

The formula uses fast-drying naphthenic solvents without chlorinated, glycol, or ether compounds, making it safer for both the environment and shop workers. The zero ozone-depleting potential (ODP = 0.00) meets strict environmental regulations whilst delivering excellent cleaning performance.

More Information

Application Instructions

  1. De-energise the vehicle — Switch off the engine and allow it to cool to room temperature. Disconnect the battery negative terminal to prevent any electrical hazards during work.
  2. Locate the air sensor — The mass air flow sensor is typically mounted between the air filter box and engine intake manifold, or occasionally in the intake manifold itself. Consult the vehicle service manual if you're unsure of the location.
  3. Disconnect the sensor — Carefully disconnect the electrical connector from the sensor. Mark the position and housing with a pen or tape so you can reassemble correctly.
  4. Apply cleaner liberally — Use the extension tube to spray CRC Air Sensor Clean Pro liberally on the hot wire and hot plate filaments. Do not touch the filaments with your fingers or tools — spray only. Allow the solvent to run off and evaporate naturally.
  5. Allow complete drying — Allow 5–10 minutes of air drying time. The solvent evaporates quickly, leaving the sensor completely clean and dry with zero residue.
  6. Reassemble carefully — Reconnect the electrical connector firmly, ensuring it clicks into place. Reinstall the sensor or sensor housing if it was removed. Reconnect the battery negative terminal.
  7. Start the engine and test — Start the vehicle and let it idle for 5–10 minutes whilst the engine computer relearns air flow patterns. You should notice immediate improvement in idle smoothness and responsiveness.

Specifications

Product Type Precision air sensor cleaner
Format Aerosol
Volume 250 mL
Appearance Clear liquid
Odour Typical solvent
Density @ 20°C 0.76 g/cm³
Flash Point <0°C (ASTM D 56)
Kauri-Butanol Value 48
Surface Tension @ 25°C 22 mN/m
Evaporation Rate Fast
Ozone-Depleting Potential 0.00 (ODP = 0.00)
Active Product Content 95% (CO₂ propellant)
Safe on Metal surfaces, most rubbers, most plastics, coatings
HS Code 3814.00

FAQs

How do I know if my air sensor is dirty and needs cleaning?

Common signs include rough idling, hesitation during acceleration, cold-start difficulty, and poor fuel economy. If the check engine light illuminates with a mass air flow sensor code, cleaning is the first troubleshooting step before considering sensor replacement.

Can I clean the sensor without removing it from the engine?

Yes, in most cases you can clean the sensor whilst it's mounted in the engine using the extension tube to direct the spray. Simply disconnect the electrical connector and spray liberally. Always consult your vehicle service manual to confirm the sensor location and accessibility.

How often should I clean my air sensor?

Routine cleaning every time you change the air filter (typically every 15,000–30,000 km) helps maintain optimal fuel mixture and engine performance. More frequent cleaning may be needed in dusty or high-pollution environments.

Will cleaning the sensor fix my rough idle and poor fuel economy?

Cleaning the air sensor often resolves these problems completely, especially if the sensor was the root cause. However, other issues like faulty spark plugs or fuel injectors could also cause similar symptoms, so if problems persist after cleaning, further diagnostics may be needed.